NASCLA Accredited Exam - JJ Johnson Contractor Seminar
Questions And Answers Verified 100% Correct
Lifelines. Where a welder must enter a confined space through a manhole or other small opening, what
should occur?
Means shall be provided for quickly removing him in case of emergency. When safety belts and lifelines
are used for this purpose they shall be so attached to the welder's body that his body cannot be jammed
in a small exit opening. An attendant with a pre-planned rescue procedure shall be stationed outside to
observe the welder at all times and be capable of putting rescue operations into effect.
Working Clearances (voltage)
1. Nominal voltage to ground, 0-150 = Minimum clear distance for conditions are 3 ft, 3ft, 3ft
2. Nominal voltage to ground, 151-600 = Minimum clear distance for conditions are 3ft, 3.5ft, 4ft
Minimum Depth of Clear Working Space in Front of Electrical Equipment
1. Nominal voltage to ground, 601 to 2,500 = Conditions 3ft, 4ft, 5ft
2. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft, 6ft
3. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft, 6ft, 9ft
4. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft, 8ft, 10ft
5. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft, 12ft
Each scaffold and scaffold component shall be capable of support, without failure, what?
Its own weight and at least 4 times the maximum intended load applied or transmitted too it
Each scaffold unit shall be installed so that the space between adjacent units and the space between the
platform and the uprights is?
No more than 1 inc (2.5cm) wide, except where the employer can demonstrate that a wider space is
necessary (for example, to fit around uprights when side brackets are used to extend the width of the
platform)
Each scaffold platform and walkway shall be?
At least 18 inches (46cm) side
The front edge of the platforms shall
Not be more than 14 inches (36cm) from the face of the work, unless guardrail systems are erected
along the front edge and/or personal fall arrest systems are used in accordance with paragraph G
The maximum distance from the face for outrigger scaffolds shall be?
3 inches (8cm)
The maximum distance from the face for plastering and lathing operations shall be?
18 inches (46cm)
, Each end of a platform, unless cleated or otherwise restrained by hooks or equivalent means, shall?
Extend over the centerline of its support at least 6 inches (15 cm)
Each end of a platform 10 feet or less in length shall?
Not extend over its support more than 12 inches (30 cm) unless the platform is designed and installed so
that the cantilevered portion of the platform is able to support employees and/or materials without
tipping, or has guardrails which block employee access to the cantilevered end
On scaffolds where platforms are overlapped to create a long platform, the overlap shall?
Ocurr only over supports, and shall not be less than 12 inches (30 cm) unless the platforms are nailed
together or otherwise restrained to prevent movement
Scaffold components manufactured by different manufacturers shall not be?
Intermixed unless components fit together without force and structural integrity is maintained by the
user. Components shall not be modified in order to intermix them unless a competent person
determines the resulting scaffold is structurally sound.
Supported scaffold poles, legs, posts, frames, and upgrights shall?
Bear on base plates and mud sills or other adequate firm foundation. Footings shall be level. Unstable
objects shall not be used. Front-end loaders and similar equipment shall not be used for support unless
they are specifically designed by the manufacturer. Fork-lifts shall not be sued.
Fall protection: Each employee on a scaffold more than 10 feet (3.1m) above a lower level shall be
protected from falling to that lower level.
Each employee on a boatswains' chair, catenary scaffold, float scaffold, needle beam scaffold, or ladder
jack scaffold shall be protected by a personal fall arrest system. Each employee on a single-point or
twopoint adjustable suspension scaffold shall be projected by both personal fall arrest system and
guardrail system. Each employ on a crawling board (chicken ladder) shall be protected, a guardrail
system (200lb minimum) or by 3/4" diameter grabline or equivalent handhold securely fastened beside
each crawling board. Each employee on a self-contained adjustable scaffold shall be protected by a
guardrail system (200lb min). Each employ on a walkway located within a scaffold shall be protected by
a guardrail system (200lb min) installed within 9.5 in of and along at least one side of the walkway. Each
employee performing overhand bricklaying operations from a supported scaffold shall be protected
from falling from all open sides and ends of the scaffold (except at the side next to the wall being laid)
by the use of a personal fall arrest system or guardrail system (200 lbs min).
The top edge height of toprails or equivalent member on support scaffolds manufactured or placed in
service after January 1, 2000 shall be?
Installed between 38 inches (.97m) and 45 inches (1.2m) above the platform surface. The top edge
height on supported scaffolds manufactured and placed in service before Jan 1, 2000 and on all
suspended scaffolds where both guardrail and a personal fall arrest system are required shall be
between 36 inches and 45 inches. When conditions warrant, the height of the top edge may exceed the
45 inch height, provided the guardrail system meets all other criteria.
Questions And Answers Verified 100% Correct
Lifelines. Where a welder must enter a confined space through a manhole or other small opening, what
should occur?
Means shall be provided for quickly removing him in case of emergency. When safety belts and lifelines
are used for this purpose they shall be so attached to the welder's body that his body cannot be jammed
in a small exit opening. An attendant with a pre-planned rescue procedure shall be stationed outside to
observe the welder at all times and be capable of putting rescue operations into effect.
Working Clearances (voltage)
1. Nominal voltage to ground, 0-150 = Minimum clear distance for conditions are 3 ft, 3ft, 3ft
2. Nominal voltage to ground, 151-600 = Minimum clear distance for conditions are 3ft, 3.5ft, 4ft
Minimum Depth of Clear Working Space in Front of Electrical Equipment
1. Nominal voltage to ground, 601 to 2,500 = Conditions 3ft, 4ft, 5ft
2. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft, 6ft
3. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft, 6ft, 9ft
4. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft, 8ft, 10ft
5. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft, 12ft
Each scaffold and scaffold component shall be capable of support, without failure, what?
Its own weight and at least 4 times the maximum intended load applied or transmitted too it
Each scaffold unit shall be installed so that the space between adjacent units and the space between the
platform and the uprights is?
No more than 1 inc (2.5cm) wide, except where the employer can demonstrate that a wider space is
necessary (for example, to fit around uprights when side brackets are used to extend the width of the
platform)
Each scaffold platform and walkway shall be?
At least 18 inches (46cm) side
The front edge of the platforms shall
Not be more than 14 inches (36cm) from the face of the work, unless guardrail systems are erected
along the front edge and/or personal fall arrest systems are used in accordance with paragraph G
The maximum distance from the face for outrigger scaffolds shall be?
3 inches (8cm)
The maximum distance from the face for plastering and lathing operations shall be?
18 inches (46cm)
, Each end of a platform, unless cleated or otherwise restrained by hooks or equivalent means, shall?
Extend over the centerline of its support at least 6 inches (15 cm)
Each end of a platform 10 feet or less in length shall?
Not extend over its support more than 12 inches (30 cm) unless the platform is designed and installed so
that the cantilevered portion of the platform is able to support employees and/or materials without
tipping, or has guardrails which block employee access to the cantilevered end
On scaffolds where platforms are overlapped to create a long platform, the overlap shall?
Ocurr only over supports, and shall not be less than 12 inches (30 cm) unless the platforms are nailed
together or otherwise restrained to prevent movement
Scaffold components manufactured by different manufacturers shall not be?
Intermixed unless components fit together without force and structural integrity is maintained by the
user. Components shall not be modified in order to intermix them unless a competent person
determines the resulting scaffold is structurally sound.
Supported scaffold poles, legs, posts, frames, and upgrights shall?
Bear on base plates and mud sills or other adequate firm foundation. Footings shall be level. Unstable
objects shall not be used. Front-end loaders and similar equipment shall not be used for support unless
they are specifically designed by the manufacturer. Fork-lifts shall not be sued.
Fall protection: Each employee on a scaffold more than 10 feet (3.1m) above a lower level shall be
protected from falling to that lower level.
Each employee on a boatswains' chair, catenary scaffold, float scaffold, needle beam scaffold, or ladder
jack scaffold shall be protected by a personal fall arrest system. Each employee on a single-point or
twopoint adjustable suspension scaffold shall be projected by both personal fall arrest system and
guardrail system. Each employ on a crawling board (chicken ladder) shall be protected, a guardrail
system (200lb minimum) or by 3/4" diameter grabline or equivalent handhold securely fastened beside
each crawling board. Each employee on a self-contained adjustable scaffold shall be protected by a
guardrail system (200lb min). Each employ on a walkway located within a scaffold shall be protected by
a guardrail system (200lb min) installed within 9.5 in of and along at least one side of the walkway. Each
employee performing overhand bricklaying operations from a supported scaffold shall be protected
from falling from all open sides and ends of the scaffold (except at the side next to the wall being laid)
by the use of a personal fall arrest system or guardrail system (200 lbs min).
The top edge height of toprails or equivalent member on support scaffolds manufactured or placed in
service after January 1, 2000 shall be?
Installed between 38 inches (.97m) and 45 inches (1.2m) above the platform surface. The top edge
height on supported scaffolds manufactured and placed in service before Jan 1, 2000 and on all
suspended scaffolds where both guardrail and a personal fall arrest system are required shall be
between 36 inches and 45 inches. When conditions warrant, the height of the top edge may exceed the
45 inch height, provided the guardrail system meets all other criteria.
